Network Management System and Network Management Information Collecting Method

1. A method for seamlessly collecting information from a mobile node in wireless network environment, in which a Manager gets the information related to network devices by polling Agents comprising: seamlessly collecting the information, which the Agent has stored during the period of the disconnection between the Manager and the Agent, by sending the Agent a request for a label-specified data pertaining to the period of the disconnection when detecting recovery of the connectivity after the connectivity between the Manager and the Agent is lost, and judging the reboot status of the Agent when detecting discontinuous data in the information collected from the Agent; and seamlessly collecting the information at a minimum time lag, when a time lag between the Manager and the Agent occurs, by continuing to resend requests for the label-specified data at pre-configured intervals Tn upon the Manager receiving a response of “no data”.

2. The method according to claim 1 , further comprising in the Agent the steps of: sampling the relevant probes for management information at pre-configured time intervals P′, appending appropriate label information to the sampled management information, and storing the labeled sampled information in a Management Information Store M 2 ; looking up the Management Information Store M 2 for the label-specified data when the Agent receives a request from the Manager to deliver the label-specified data, and returning the data to the Manager; and returning the message “no data” to the Manager, upon the label-specified data not being found in the Management Information Store M 2 .

3. The method according to claim 1 , the Manager further comprises the steps of: sending the Agent a request for a label-specified data at pre-configured Polling-intervals P and receiving either “requested data” or “no data” from the Agent in response; detecting “Timeout” upon the Manager not receiving any response from the Agent within a pre-configured Timeout-period T 0 ; storing “requested data” in a Network Information Store M 1 upon the Manager receiving “requested data”; resending the request for the label-specified data at pre-configured Next-intervals Tn, till the Manager receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0) which is configured in advance upon the Manager receiving a response of “no data”; and continuing to send requests for the label-specified data at pre-configured Next-intervals Tn, till it receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0) which is configured in advance, upon the Manager detecting “Timeout”.

4. A Network Management System, comprising: microprocessors programmed to perform as: a Manager which gets the information related to network devices by polling Agents in wireless network environment by sending the Agent a request for a label-specified data at pre-configured Polling-intervals P and receiving the data pertaining the label-specified data from the Agent; and an Agent which samples the relevant probes for management information at pre-configured time intervals P′, appends appropriate label information to the sampled management information, and stores the labeled sampled information in a Management Information Store, wherein the Manager comprises seamlessly collecting the information, which the Agent has stored during the period of the disconnection between the Manager and the Agent, by sending the Agent a request for a label-specified data pertaining to the period of the disconnection when detecting recovery of the connectivity after the connectivity between the Manager and the Agent is lost, and judging the reboot status of the Agent when detecting discontinuous data in the information collected from the Agent; and seamlessly collecting the information at a minimum time lag, when a time lag between the Manager and the Agent occurs, by continuing to resend requests for the label-specified data at pre-configured intervals Tn upon the Manager receiving a response of “no data”.

5. The System according to claim 4 , the Agent further comprises: sampling the relevant probes for management information at pre-configured time intervals P′, appending appropriate label information to the sampled management information, and storing the labeled sampled information in a Management Information Store M 2 ; looking up the Management Information Store M 2 for the label-specified data when the Agent receives a request from the Manager to deliver the label-specified data, and returning the data to the Manager; and returning the message “no data” to the Manager, upon the label-specified data not being found in the Management Information Store M 2 .

6. The System according to claim 4 , the Manager further comprises: sending the Agent a request for a label-specified data at pre-configured Polling-intervals P and receiving either “requested data” or “no data” from the Agent in response; detecting “Timeout” upon the Manager not receiving any response from the Agent within a pre-configured Timeout-period T 0 ; storing “requested data” in a Network Information Store M 1 upon the Manager receiving “requested data”; resending the request for the label-specified data at pre-configured Next-intervals Tn, till the Manager receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0) which is configured in advance upon the Manager receiving a response of “no data”; and continuing to send requests for the label-specified data at pre-configured Next-intervals Tn, till it receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0) which is configured in advance, upon the Manager detecting “Timeout”.

7. A SNMP Network Management System, comprising: microprocessors programmed to perform as: a SNMP Manager which gets the information related to network devices by polling SNMP Agents in wireless network environment by sending the SNMP Agent a request for a label-specified data at pre-configured Polling-intervals P and receiving the data pertaining the label-specified data from the SNMP Agent; and a SNMP Agent which samples the relevant probes for management information at pre-configured time intervals P′, appends appropriate label information to the sampled management information, and stores the labeled sampled information in a Management Information Store, wherein the SNMP Manager comprises seamlessly collecting the information, which the SNMP Agent has stored during the period of the disconnection between the SNMP Manager and the SNMP Agent, by sending the SNMP Agent a request for a label-specified data pertaining to the period of the disconnection when detecting recovery of the connectivity after the connectivity between the SNMP Manager and the SNMP Agent is lost, and judging the reboot status of the SNMP Agent when detecting discontinuous data in the information collected from the SNMP Agent; and seamlessly collecting the information at a minimum time lag, when a time lag between the SNMP Manager and the SNMP Agent occurs, by continuing to resend requests for the label-specified data at pre-configured intervals Tn upon the SNMP Manager receiving a response of “no data”.

8. The System according to claim 7 , the SNMP Agent further comprises: sampling the relevant probes for management information at pre-configured time intervals P′, appending appropriate label information to the sampled management information, and storing the labeled sampled information in a Management Information Store M 2 ; looking up the Management Information Store M 2 for the label-specified data when the SNMP Agent receives a request from the SNMP Manager to deliver the label-specified data, and returning the data to the SNMP Manager; and returning the message “no data” to the SNMP Manager, upon the label-specified data not being found in the Management Information Store M 2 .

9. The System according to claim 7 , the SNMP Manager further comprises: sending the SNMP Agent a request for a label-specified data at pre-configured Polling-intervals P and receiving either “requested data” or “no data” from the SNMP Agent in response; detecting “Timeout” upon the SNMP Manager not receiving any response from the SNMP Agent within a pre-configured Timeout-period T 0 ; storing “requested data” in a Network Information Store M 1 upon the Manager receiving “requested data”; resending the request for the label-specified data at pre-configured Next-intervals Tn, till the SNMP Manager receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0) which is configured in advance upon the SNMP Manager receiving a response of “no data”; and continuing to send requests for the label-specified data at pre-configured Next-intervals Tn, till it receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0) which is configured in advance, upon the SNMP Manager detecting “Timeout”.